I really should get those instant ice-packs. How do they work? Do I have to freeze them beforehand?

You squeeze them really hard until an inner bag of water (I think it's water anyways) bursts, which mixes with chemicals in the outer bag, and presto, it's cold in seconds.

Originally Posted by RedCelt

Went looking for it, apparently my injury is in the MTP joint, but it was due to "rolling my toe underneath me", with someone on top. After some months it still hurts, I think it wont go away easily now.

Yes, the MTP joint. You have a definite case of "Judo Toe" (tm). However, holy ****, months? I've never had a case last that long, see a doctor!